Starts With A Bang #16: How fast is the Universe expanding?

The discovery almost 100 years ago that the Universe was expanding was a revolution for science, for cosmology and for our conception of existence. Hubble discovered what Einstein's couldn't imagine, and after that, the race was on to learn exactly what those observations meant for our cosmic origins. After decades of controversies, we now have a better picture of our Universe than ever before, yet questions remain. What will be the ultimate answer? Find out the possibilities, and what the limits of our knowledge tell us is possible, on this edition of the Starts With A Bang podcast!